<template>
  <div>
    <!--面包屑导航区-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card>
      <el-alert
        title="添加商品信息"
        type="info" :closable="false" show-icon center>
      </el-alert>
      <el-steps align-center :active="activeIndex-0">
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>
      <el-form :model="addGoodsForm" :rules="addGoodsFormRules" ref="addGoodsFormRef" label-width="100px"
               label-position="top">
        <el-tabs tab-position="left" v-model="activeIndex" :before-leave="beforeTabLeave" @tab-click="tabClicked">
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addGoodsForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model="addGoodsForm.goods_price" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input v-model="addGoodsForm.goods_weight" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addGoodsForm.goods_number" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品分类" prop="goods_cat">
              <!--选择商品的级联选择框-->
              <el-cascader
                v-model="addGoodsForm.goods_cat"
                :options="catelist"
                :props="cascaderProps"
                @change="handleChange" clearable>
              </el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <el-form-item :label="item.attr_name" v-for="item in manyTableData"
                          :key="item.attr_id">
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox border :label="cb" v-for="(cb,i) in item.attr_vals" :key="i"></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item :key="item.attr_id" :label="item.attr_name" v-for="item in onlyTableData">
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <el-upload
              :action="uploadUrl"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              list-type="picture" :headers="headerObj" :on-success="handleSuccess">
              <el-button size="small" type="primary">点击上传</el-button>
              <div slot="tip" class="el-upload__tip">只能上传jpg/png文件，且不超过500kb</div>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <quill-editor v-model="addGoodsForm.goods_introduce"></quill-editor>
            <el-button type="primary" class="btnAdd" @click="addGoods">添加商品</el-button>
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>
    <!--图片对话框-->
    <el-dialog
      title="图片预览"
      :visible.sync="dialogVisible"
      width="50%"
    >
      <img :src="previewPath" alt="" class="previewImg">
    </el-dialog>
  </div>
</template>

<script>
  import _ from 'lodash'

  export default {
    name: "Add",
    data() {
      return {
        activeIndex: '0',
        addGoodsForm: {
          goods_name: '',
          goods_price: 0,
          goods_weight: 0,
          goods_number: 0,
          goods_cat: [],
          pics: [],
          attrs: [],
          goods_introduce: ''
        },
        addGoodsFormRules: {
          goods_name: [
            {required: true, message: '请输入商品名称', trigger: 'blur'},
          ],
          goods_price: [
            {required: true, message: '请输入商品价格', trigger: 'blur'},
          ],
          goods_weight: [
            {required: true, message: '请输入商品重量', trigger: 'blur'},
          ],
          goods_number: [
            {required: true, message: '请输入商品数量', trigger: 'blur'},
          ],
        },
        catelist: [],
        cascaderProps: {
          expandTrigger: 'hover',
          value: 'cat_id',
          label: 'cat_name',
          children: 'children',
        },
        manyTableData: [],
        onlyTableData: [],
        uploadUrl: 'http://timemeetyou.com:8889/api/private/v1/upload',
        //图片验证headers
        headerObj: {
          Authorization: window.sessionStorage.getItem('token')
        },
        previewPath: '',
        dialogVisible: false
      }
    },
    created() {
      this.getCateList()
    },
    methods: {
      getCateList() {
        this.$store.dispatch('getCateParamsList_').then(() => {
          this.catelist = this.$store.state.params_cate_list
        })
      },
      handleChange() {
        if (this.addGoodsForm.goods_cat.length !== 3) {
          this.addGoodsForm.goods_cat = []
        }
      },
      beforeTabLeave(activeName, oldActiveName) {
        if (oldActiveName === '0' && this.addGoodsForm.goods_cat.length !== 3) {
          this.$message.error("请选择商品分类")
          return false
        }
      },
      tabClicked() {
        if (this.activeIndex === '1') {
          let params = {
            id: this.cateId,
            sel: {sel: 'many'}
          }
          this.$store.dispatch('getParamsList_', params).then(() => {
            if (this.$store.state.params_state !== 200) {
              return this.$message.error("获取动态属性失败")
            }
            const res = this.$store.state.params
            res.forEach(item => {
              item.attr_vals = item.attr_vals ? item.attr_vals.split(' ') : []
            })
            this.manyTableData = res
          })
        } else if (this.activeIndex === '2') {
          let params = {
            id: this.cateId,
            sel: {sel: 'only'}
          }
          this.$store.dispatch('getParamsList_', params).then(() => {
            if (this.$store.state.params_state !== 200) {
              return this.$message.error("获取静态属性失败")
            }
            this.onlyTableData = this.$store.state.params
          })
        }
      },
      //处理图片预览
      handlePreview(file) {
        this.previewPath = file.response.data.url
        this.dialogVisible = true
      },
      //移除图片
      handleRemove(file) {
        const filePath = file.response.data.tmp_path
        //找到图片索引值
        const i = this.addGoodsForm.pics.findIndex(x => x.pic === filePath)
        this.addGoodsForm.pics.splice(i, 1)
      },
      //图片上传成功后
      handleSuccess(response) {
        const picInfo = {
          pic: response.data.tmp_path
        }
        this.addGoodsForm.pics.push(picInfo)
      },
      //添加商品
      addGoods() {
        this.$refs.addGoodsFormRef.validate(valid => {
          if (!valid) {
            return this.$message.error("请添加必要的商品信息")
          }
          const form = _.cloneDeep(this.addGoodsForm)
          form.goods_cat = form.goods_cat.join(',')
          this.manyTableData.forEach(item => {
            const newInfo = {
              attr_id: item.attr_id,
              attr_value: item.attr_vals.join(' ')
            }
            this.addGoodsForm.attrs.push(newInfo)
          })
          this.onlyTableData.forEach(item => {
            const newInfo = {
              attr_id: item.attr_id,
              attr_value: item.attr_vals
            }
            this.addGoodsForm.attrs.push(newInfo)
          })
          form.attrs = this.addGoodsForm.attrs
          this.$store.dispatch('addGoods_', form).then(() => {
            if (this.$store.state.goods_add_state !== 201) {
              return this.$message.error("商品添加失败")
            }
            this.$message.success("商品添加成功")
            this.$router.push('/goods')
          })
        })
      }
    },
    computed: {
      cateId() {
        if (this.addGoodsForm.goods_cat.length === 3) {
          return this.addGoodsForm.goods_cat[2]
        }
        return null
      }
    }
  }
</script>

<style lang="less" scoped>
  .el-checkbox {
    margin: 0 10px 0 0 !important;
  }

  .previewImg {
    width: 100%;
  }

  .btnAdd {
    margin-top: 15px;
  }
</style>
